Euclid was an ancient greek scholar who
wrote a geometry textbook that was used for nearly 2,000 years.
calculated the value of the infinite number known as pi.
computed the circumference of planet earth.
developed military tactics that still apply today.

the space race was a battle to make advanced technology to get to the moon and to get a better understanding of space.

native americans suffered high rates of poverty and unemployment.

during the late 1960s and early 1970sthe need for political militancy grew among the native americans. throughout the 1960s, they had been the nation's poorest minority group, the most deprived group, according to practically every socioeconomic measure. in 1970, the indian unemployment rate was 10 times the national average, and 40 percent of the native american people were below the poverty line.